[R] off-topic: affine transformation matrix

[Dylan Beaudette]

This may sound like a very naive question, but...

give two lists of coordinate pairs (x,y - Cartesian space) is there any simple 
way to compute the affine transformation matrix in R.

I have a set of data which is offset from where i know it should be. I have 
coordinates of the current data, and matching coordinates of where the data 
should be. I need to compute the composition of the affine transformation 
matrix, so that I can apply an affine transform the entire dataset. 

any ideas?

thanks in advance!
-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341